Motion (n.) helps the body digest and grow healthy, handsome and strong, whether it is shaken, jolted, or carried on a boat or a horse.
Motion (n.) never stops in the universe because the round heaven squeezes everything inward, pressing small bodies into the gaps of large ones, so unevenness is renewed forever.
Motion (n.) is what keeps things in being: fire is born of friction, bodies keep their health by exertion, and souls are preserved by learning.
Motion (n.) is best when it comes from within oneself, as in exercise; second is being rocked at sea; worst is being stirred part by part by drugs.
Motion (n.) has its source and spring in the self-mover, and a source has no beginning: destroy it and all heaven and everything that has been started up would collapse and come to a stop.